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US 4,400,327 AGranted
Preparation of siloxylated metal-containing catalysts
AssigneeUnion Carbide Corporation
InventorsFeyyaz O, Baskent, James D. Reedy
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Abstract
Reaction of silylamine with a metallic carboxylate produces siloxylated organometallic compounds with M--O--Si bonds. These siloxylated organometallic compounds are useful catalysts in the preparation of urethane foams and elastomers, especially when prepared in situ with the urethane foam or elastomer reactants.
Claims9
A process for preparing a siloxylated organometallic catalyst which comprises reacting below 100.degree. C. a silylamine of the formula:
- R.sub.4-n Si(NR'R").sub.n
- wherein R is a alkyl, alkaryl, alkenyl, alkynyl, aryl cycloaliphatic, or heteroatom substituted aliphatic siloxy or substituted siloxy group;
- R' and R" are individually hydrogen, alkyl, alkenyl, alkynyl, aryl, cycloaliphatic, or heteroatom substituted aliphatic, groups provided R' and R" cannot both be hydrogen;
- and n is one to four inclusive, with a metallic carboxylate of the formula:
- M(OCOR'").sub.x R"".sub.y
- wherein M is a metal with an oxidation state, R'" and R"" are individually an alkyl, alkaryl, alkenyl, alkynyl, aryl, cycloaliphatic, or heteroatom substituted aliphatic, group;
- x is at least one but no more than the oxidation state of M and y is equal to the oxidation state of M minus x, and M is greater than or equal to two.
4 more elements
Dependencies are inferred from the claim text.